Internet of Things

FR-4 Copper Clad Laminate (CCL) materials are categorized into various levels based on quality and application. The A1 level CCL is designed for high-performance applications such as military, communications, and automotive circuits, meeting world-class standards. A2 level CCL is cost-effective, suitable for general computers, instruments, and advanced electronic products, offering balanced quality and competitiveness. A3 grade CCL is used in household appliances, computer peripherals, and general electronics, providing a competitive price for mass-market products. A4 grade is a low-end CCL material, still meeting performance needs for everyday electronics, with the highest cost-efficiency. Class B CCL, the most affordable, has poor quality stability, limiting its use to smaller circuit boards (less than 100mmx200mm) due to size instability.

LED SMT machines, designed specifically for LED bead placement, feature user-friendly programming and high throughput but lack the precision of common SMT machines used for general SMD components. While common SMT machines offer flexibility and compatibility for various components, LED SMT machines are specialized for high-speed LED assembly and are significantly more affordable, making them an attractive option for mass LED panel production.

PCB assembly (PCBA) involves two primary phases: automated Surface Mount Technology (SMT) assembly and manual through-hole assembly. SMT is more cost-effective due to automation, making it a popular choice. A well-prepared PCBA quote is crucial for fostering future cooperation with customers. SYS Tech, a top Chinese assembly house, emphasizes the importance of a professional and visually appealing quote format to stand out. Attractive pricing does not necessarily mean the lowest price, as low cost often correlates with poor quality. Offering competitive pricing with considerations for higher volumes or excluding certain costs, like testing, can create a more appealing offer while maintaining profitability.

CCL (Copper Clad Laminate), the base material of printed circuit boards (PCBs), is primarily supplied by manufacturers from East Asia, such as Taiwan, Japan, South Korea, and China, with notable companies like KB, Shengyi, Dusan, and Panasonic. The quality of PCB laminate is influenced by several key factors, including glass transition temperature (Tg), coefficient of thermal expansion (CTE), decomposition temperature (Td), heat resistance, electrical conductivity, and water absorption.

The Taiwan Printed Circuit Association (TPCA) and Industrial Economics and Knowledge Center (IEK) published a PCB industry report for Q1 2016, highlighting the effects of global economic recession and China's market turbulence on the Asian PCB sector. Taiwan maintained its leading position with a 30.2% global market share, while South Korea saw a decline due to reduced demand in downstream markets like smartphones and tablets. Japan shifted focus to high-end PCB products, aiming for niche markets. Mainland China PCB manufacturers continued to pursue market share using low-cost strategies, but faced growth bottlenecks, especially in technology and quality.

The most important thing to set the reflow soldering temperature is to set it according to the characteristics of the solder paste. Each solder paste has a parameter value. In addition to the temperature parameter value of reflow soldering, we also need to consider environmental factors, and the setting of reflow soldering temperature also depends on other reasons, SYS Technology​ will share below.